<script setup>
import Son from './components/Son.vue'
import { ref } from 'vue'
const app = ref('我是一个app组件')

</script>
<template>
  <div>
    御剑乘风来,除魔天地间!===vue3
    <Son :app="app" app2="APP2"></Son>
  </div>
</template>
<style lang='less'  scoped>
</style>